The first picture is a product picture, the other pictures are sample displays Note: 1: Due to the different colors displayed by different computers, the colors of the actual items may be slightly different from the picture above. 2.Due to manual measurement, there may be slight deviations, but it does not affect the use. Specifications: Bluetooth Version: V3.0+EDR Frequency: 2.4026GHz-2.480GHz Transmission distance: 32.80ft or so Transmission distance of MIC: 3 ft Li-ion Battery:3.7V/200mA Charging time:2 HRS Standby time:30 Hrs Continuous working time: about 5Hrs Size:Fits for head circumference 56-62cm Package Included: 1 Bluetooth music cap 1 x charging cable 1* instruction manual Notes: Due to the difference between different monitors, the pictures may not reflect the actual color of the item. Compare the detail sizes with yours, please allow 0.5-1cm error, due to manual measurement.